you can tutn gas guns into real steel, could probably reverse the process.

NO.

Not possible or ATF would be all over your ass. In fact WE had ATF all over their ass at one point until they retooled all of their mfg. equipment (and that's not cheap to do either especially with stuff already in production and stores upon stores of already made stuff in a warehouse). I know were not American but it still applies, CBSA and RCMP would be all over any companys ass that you could convert RS to airsoft.